"Alex Z" <[EMAIL PROTECTED]>wrote:
Sent: Friday, October 17, 2003 4:03 PM

>
> --- Craig  Zendel <[EMAIL PROTECTED]> wrote:
> > Hi all,
> >
> > I had to clean the 10D sensor recently as it was very dusty, more
> > than ever
> > before. No big deal it gets dusty.
> >
> > Then I remembered, I'd been zooming during exposure with the 70-200.
> > It
> > looks like this could have sprayed the sensor with dust.
> >
> > I can't be certain but close-ups with 100M at f/16 were clean before
> > this.
> >
> > Just a thought.
> >
> > CraigZ
>
> Not sure how zooming would influence dust issue. The rear element on
> 70-200 is fixed and do not move at all during zooming, so cannot pose
> "vacuum pumping" effect blowing the dust within the camera. Otherwise I
> miss something...
>
> regards, Alex

I realise this, but there are four small gaps between the rear lens cell and
the barrel.

Could just have been coincidence.

CraigZ



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